2015年2月3日

var phoneWidth =  parseInt(window.screen.width);
        var phoneScale = phoneWidth/640;
        var ua = navigator.userAgent;
        if (/Android (d+.d+)/.test(ua)){
            var version = parseFloat(RegExp.$1);
            // andriod 2.3
            if(version>2.3){
                document.write('<meta name="viewport" content="width=640, minimum-scale = '+phoneScale+', maximum-scale = '+phoneScale+', target-densitydpi=device-dpi">');
            // andriod 2.3以上
            }else{
                document.write('<meta name="viewport" content="width=640, target-densitydpi=device-dpi">');
            }
            // 其他系统
        } else {
            document.write('<meta name="viewport" content="width=640, user-scalable=no, target-densitydpi=device-dpi">');
        }
        //微信去掉下方刷新栏
        if(RegExp("MicroMessenger").test(navigator.userAgent)){
            document.addEventListener('WeixinJSBridgeReady', function onBridgeReady() {
                WeixinJSBridge.call('hideToolbar');
            });
        }